Distribution of Organic Phosphorus in Tamil Nadu Soils

G.V. KOTHANDARAMAN and K.K. KRISHNAMOORTHY

doi:https://doi.org/10.29321/MAJ.10.A03101

Madras Agricultural Journal

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Distribution of Organic Phosphorus in Tamil Nadu Soils

Author: G.V. KOTHANDARAMAN and K.K. KRISHNAMOORTHY,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 65, Issue: jul-jul,

DOI:https://doi.org/10.29321/MAJ.10.A03101

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Abstract

Thirty eight soil samples collected from nine profiles representing the major soil groups viz.. red black, laterite and alluvial soils were examined for organic P content. The organic P content of the soils ranged from 26 to 467 ppm and its percentage to total P was from 9.11 to 56.81. Highest organic P was recorded in the high level faterie soils. Organic P was rich. in the surface layers and it was found to decrease with depth in most of the profiles. The range of organic C/org. P ratio was from 5.05 to 123.4. Organic P significantly correlated with total P. organic carbon, total N and C/N ratio. Org. C/Org. P significantly correlated with C/N ratio.

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